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harman/kardon
HKSUB 12
Powered Subwoofer
SERVICE MANUAL
harman/kardon, Inc.
250 Crossways Park Dr.
Woodbury, New York 11797 Rev1 9/2004
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HKSUB12 harman/kardon
CONTENTS
BASIC SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . ... . ... . . .. .. . .. . .. .. .. . . . . . 1
DETAILED SPECIFICATIONS . . . . . ………………... ……………. .. ………... . . .. . . . . .. . … . .2
CONTROLS & CONNECTIONS . . . . . . . . . . . . . .. . . . . . . . . … . . . . .. . . . . . . . . . .. . . .. . . . . 3
CONNECTION GUIDE………... . . . . . . . . . . . . .. . . . . . . . . …... . . . . . .. . . . . . . . . .. . . . . . . . . 5
CONFIGURING RECEIVER/PROCESSOR…………………..……………..……. . . . .. . .. . . . . . . 8
OPERATION……. . . . . .. . . . . . . . .. .. . . . .. .. . . . . …………………….……….. . . . .. . .. . . . . . . 9
BASIC TROUBLESHOOTING GUIDE………………………………………………………….. . . . .10
HKSUB 12 EXPLODED VIEW. . . . ………………... ……………. .. ………... . . .. . .. .. . . .. . … . 11
HKSUB 12 AMPLIFIER EXPLODED VIEW. . . . ………………... . .. ………... . . .. . .. .. . . .. . … . 12
HKSUB 12 BLOCK DIAGRAM . . . . . . . . . . . . . .. . . . . . . ……………… . . . . . . .. . .. .. . . . . . . 13
HKSUB 12 TEST PROCEDURE. .. . . . . . . . . . . . . . .. . . . . ……… ………….... . . . .. . .. .. . . . . . 14
HKSUB 12 PCB DRAWINGS. .. . . . . . . . . . . . . . .. . . . . ……… . …………. . . . . . . .. . .. .. . . . . . 15
HKSUB 12 ELECTRICAL PARTS LIST …………. .... . .. . . . . ………….…….. . . . . . .. . .. .. . . . . 17
HKSUB 12 MECHANICAL/PACKING PARTS LIST …………. .... . .. . . . . …... . . . . . .. . .. .. . . . . 20
HKSUB 12 IC – TRANSISTOR PINOUTS . … . . .. . . . . . . ………………….………... . .. .. . . . . . 21
HKSUB 12 SCHEMATIC DIAGRAMS . . . . . . . . .. .. .. .. . . . .. . ……………….……... . . . . . . . . . .22
HKSUB 12 PACKAGE………... . . . . . . . . . . . . .. . . . . . . . . …... . . . . . .. . . . . . . . . .. . . … . . . . .25
SPECIFICATIONS
Amplifier Power (RMS) 150 Watts
Driver 12" Polymer-coated-cone woofer
Inputs Stereo Line Level, dedicated Subwoofer (LFE)
and Speaker Level with gold-plated 5-way binding posts
Outputs Speaker Level with gold-plated 5-way binding posts
Low-Pass Frequency Continuously variable from 50Hz – 150Hz
Frequency Response 25Hz – low-pass crossover setting
Dimensions (H x W x D) 20-1/2" x 16" x 13-3/4"
(520mm x 401mm x 350mm)
Weight 40 lb/18kg
Occasional refinements may be made to existing products without notice but will always meet or exceed original specifications
unless otherwise stated.
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r
2mV@50Hz into Line Input w/ 1 ch.
50mV@50Hz into Line Input w/ 1 ch
2
HKSUB12 harman/kardon
HK SUB12 150W Powered Amplifier
LINE VOLTAGE Yes/No Hi/Lo Line Unit Notes
Paramete
Amp Section
Type (Class AB, D, other) D D
Load Impedance (speaker) 4 Ohms
Rated Output Power 150 Watts
THD@ Rated Power 0.08 %
THD @ 1 Watt 0.15 %
DC Offset 5 mV-DC
Damping factor >100 DF
Input Sensitivity
Signal to Noise
SNR-A-Weighted 100 dBA
SNR-unweighted 90 dBr
SNR @ 1W-unweighted 65 dBr
Residual Noise Floor 1.2 mVrms
Residual Noise Floor 0.8
Input Impedance
Line input L&R , LFE (Sub) 10 K ohms
Filters
Left & Right Low Pass fixed 130 Hz -LFE Low Pass fixed 220 Hz -Subsonic filter (HPF) 22 Hz --
Limiter YES --
Features
LFE(Sub) Input YES
Volume pot Taper (lin/log) log -ATO YES
Signal Sensing (ATO)
ATO test Frequency 50 Hz
ATO Line Level 4.0 mV
ATO Speaker level input 40 mV
ATO Turn-on time 5 ms
US 120vac/60Hz Yes 108-132 Vrms
Specification Unit QA Test LimitsConditions Notes
Input Frequency 50 Hz
Line Input (L&R) 220 mVrms
LFE (Sub) Input 220 mVrms
Speaker/Hi Level Input 2.2 Vrms
mVrms(max)
Speaker/Hi Level Input 4.7 K ohms
n/a
n/a Nominal
150 1 input driven
1 22k filter
0.5 22k filter
30 @ Speaker Outputs
30
NA Nominal Freq. 1 input driven
±2dB To Rated Power 1 input driven
±2dB To Rated Power LFE input driven only
±2dB To Rated Power (-20 dB below Line In)...1 input driven
85 rel. to rated power A-Weighting filter
80 rel. to rated power 22k filter
60 rel. to 1W Output 22k filter
3.0
2.0
n/a Nominal
n/a Nominal
±2dB @ -3dB ref. 100Hz
±2dB @ -3dB ref. 100Hz
±2dB @ -3dB ref. 100Hz
n/a
functional BW Limited to 220 Hz
functional
functional
n/a
2.0 - 8.0
20 - 80
functional
Normal Operation
Volume @max, using RMS reading
DMM/VOM (or A/P)
Volume @max, w/ A/P Swept Bandpass
Measurement (Line freq.+ harmonics)
driven
driven
Amp connected and AC on, then input
signal applied
Measured at speaker terminals, Output
power 140 Watts THD 0.1 %
.
Auto Mute/ Turn-OFF Time 15 minutes
Power on Delay time 3 sec.
Transients/Pops
ATO Transient 5 mV-peak
Turn-on Transient 50 mV-peak
Turn-off Transient 50 mV-peak
Efficiency
Stand-by Input Power 10 Watts
Power Cons.@rated power 230 Watts
Protection
Short Circuit Protection YES --
Thermal Protection 65 deg. C -DC Offset Protection YES -Line Fuse Rating
US Version 3.15 Amps
10 - 25 T before muting, after signal is removed
functional AC Power Applied
10 @ Speaker Outputs
100 @ Speaker Outputs AC Line cycled from OFF to ON
100 @ Speaker Outputs AC Line cycled from ON to OFF
Maximum allowable input power under
nominal Input voltage and frequency, HOT
12 @ nom. line voltage
250 @ nom. line voltage
functional Direct short at output
functional @1/8 max unclipped Power
functional DC present at Speaker Out leads Relay or crowbar (for driver/fire protection)
Type-T or Slo Blo External fuse with UL/SEMKO rated holder
or COLD operation.
150 Watts @ 4 Ohms nominal line voltage
Temperature rise should not exceed 35K
rise
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HKSUB12 harman/kardon
AMPLIFIER PANEL CONTROLS AND CONNECTIONS
¢
LINE
LEVEL
∞
§
¶
•
¡ Speaker-Level Inputs
™ Speaker-Level Outputs
GREEN: ON
IN
SUB
L
R
NORMAL
PHASE
RED: STAND-BY
AUTO
REVERSE
ON
100Hz
50Hz
CROSSOVER
FREQUENCY
FILTER
OFF ON
150Hz
MIN
SUBWOOFER
LEVEL
MAX
£ Line-Level Full-Range Inputs
¢ Line-Level Subwoofer (SUB) Input
∞ Phase Switch
ª
‚
§ Music-Sense On/Off Switch
¶ LED Indicator
• High-Cut (Low-Pass) Filter Switch
ª Crossover Frequency Control
‚ Subwoofer Level Control
⁄ Master Power Switch
¤ AC Power Cord
£
LR
™
¡
IMPORTANT: CONNECT STRIPED WIRE TO RED ( ) SPEAKER TERMINAL.
HKSUB 12
Made in China
CA UT IO N
CA UT IO N
RISK O F ELECT RIC SHO CK
RISK O F ELECT RIC SHO CK
RISK O F ELECT RIC SHO CK
DO NOT O PEN
DO NOT O PEN
DO NOT O PEN
¡ Speaker-Level Inputs: If your receiver
or amplifier does not have a line-level
subwoofer output, connect these binding
post terminals to the main left and right
speaker terminals of your receiver or
amplifier. Remember to maintain polarity
by connecting the (+) terminal on the
receiver/amplifier to the (+) terminal on the
HKSUB 12
the receiver/
subwoofer, and the (–) terminal on
amplifier to the (–) terminal on the
HKSUB 12 subwoofer.
™ Speaker-Level Outputs: If you are
using the
Speaker-Level Inputs ¡ on
the HKSUB 12, connect these binding post
terminals to your front left and right speakers,
POWER
AC 120V~60Hz
250 Watts
remembering to maintain polarity by connecting the (+) terminal on the HKSUB 12
subwoofer to the (+) terminal on the speaker, and the (–) terminal on the HKSUB 12
subwoofer to the (–) terminal on the speaker. If you are not using the
Speaker-Level
Inputs ¡, connect your front left and
right speakers directly to your receiver
or amplifier. See pages 9 through 12 for
further information on speaker connections.
£ Line-Level Full-Range Inputs: Connect
the full-range, unfiltered line-level subwoofer
output or preamp output(s) of your receiver or
amplifier to these inputs. If your receiver does
not have a separate subwoofer output, use a
⁄
¤
Y-adapter (not supplied) to
preamp output to the main
channel, and connect the long end of the
adapter to the corresponding
on the HKSUB 12. If your receiver has only a
single subwoofer output, you may connect it
to either the left or right line-level input on the
HKSUB 12, and no Y-adapter is needed.
¢ Line-Level Subwoofer (SUB) Input:
Connect the filtered subwoofer output of a
receiver to this input. This input bypasses
the HKSUB 12’s internal crossover circuitry,
bridge the receiver’s
amp input for that
line-level input
2AMPLIFIER PANEL CONTROLS AND CONNECTIONS
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AMPLIFIER PANEL CONTROLS AND CONNECTIONS 3
AMPLIFIER PANEL CONTROLS AND CONNECTIONS
and should only be used with a filtered signal. If your receiver does not have a filtered
subwoofer output, you should use the
Line-
Level Full-Range Inputs £ instead.
∞ Phase Switch: This switch determines
whether the HKSUB 12 subwoofer’s pistonlike action moves in and out in phase with
the main speakers. If the speakers are out
of phase, the sound waves produced by
the subwoofer will be cancelled out, reducing bass response. This phenomenon
depends in part on the relative placement
of the speakers in the room. In most cases,
the
Phase Switch ∞ should be left in the
NORMAL position. However, it does no
harm to experiment with the Phase
Switch ∞, and you may leave it in the
position that maximizes bass response.
§ Music-Sense On/Off Switch: When
this switch is placed in the AUTO position,
and when the Master Power Switch ⁄ is
turned on, the HKSUB 12 will automatically
turn on or place itself in the Standby mode,
depending on whether it is receiving an audio
signal. When this switch is placed in the
ON
position, the HKSUB 12 will remain on,
whether or not it is receiving an audio signal.
¶ LED Indicator: This LED indicates
whether the HKSUB 12 is in the ON
or STANDBY state when used with
the Music-Sense On/Off Switch § in
the AUTO position. The LED is lit green
to indicate that the HKSUB 12 is receiving
an audio signal and is turned on, and the
LED is lit red to indicate that no signal is
being received and the HKSUB 12 is in
Standby mode.
When the
Music-Sense On/Off Switch
§ is in the ON position, the LED will be
lit green, whether or not an audio signal
is present.
When the
Master Power Switch ⁄ is
turned off, the LED goes dark, no matter
which position the Music-Sense On/Off
Switch § is in.
• High-Cut (Low-Pass) Filter Switch:
Placing this switch in the ON position activates circuitry that filters out all audio input
signals above the setting of the
Crossover
Frequency Control ª. This allows the
HKSUB 12 to focus its power on reproducing the low-frequency portion of the signal,
avoiding inefficiency and distortion. Engage
this filter when using the
Speaker-Level
Inputs ¡, or when using the Line-Level
Full-Range Inputs £, unless your receiv-
er or processor processes its line-level output using a low-pass filter. The filter has no
effect when the
SUB Input ¢ is used.
ª
Crossover Frequency Control: Adjust
this control to set the highest frequency the
HKSUB 12 will reproduce. You should
begin by setting it slightly above the
lowest frequency that your main speakers
are capable of reproducing. You may
safely adjust the crossover frequency
later as you listen to different program
materials. This control will have no effect if
you are using the
Line-Level Subwoofer
(SUB) Input ¢, or if you have set the
High-Cut (Low-Pass) Filter Switch •
to the OFF position. See page 14 for
more information on adjusting the
crossover setting.
‚ Subwoofer-Level Control: Volume
may be adjusted using the Subwoofer-
Level Control.Turn the control clockwise
to increase the HKSUB 12’s volume, or
counterclockwise to decrease it.
⁄ Master Power Switch: Press this
rocker switch at the “•” mark to power-on
the HKSUB 12 subwoofer. The HKSUB 12
will then be either in the Standby mode or
completely on, depending on the position
of the
Music-Sense On/Off Switch §.
¤ AC Power Cord: Plug this cord
into an active, unswitched electrical outlet
for proper operation of the HKSUB 12.
The cord should not be plugged into the
accessory outlets found on some audio
components.
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HKSUB12 harman/kardon
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HKSUB12 harman/kardon
SPEAKER CONNECTION GUIDE
Analog Receiver/Processor –
Speaker-Level Connections
Use this installation method for
analog receivers or processors
that do not have
or bass-management programming,
and where the receiver/
does not have a subwoofer output,
or a volume-controlled preamp
(line-) level output:
Connect your receiver or amplifier’s front
left and right speaker terminals to the
left and right Speaker-Level Input ¡
terminals on the HKSUB 12 subwoofer
that are marked “High Level In.” Connect
the left and right Speaker-Level Output
™ terminals on the HKSUB 12 subwoofer
that are marked “High Level Out” to the
corresponding terminals on
your front left and right speakers.
Connect your receiver or amplifier’s
center, surround, and surround back
speaker terminals to the corresponding
terminals on the back of your center
and surround speakers.
When all connections have been made,
plug the
AC Power Cord ¤ on the
subwoofer into an AC outlet.
digital processing
processor
the back of
Front
Left
– + – +
Front Left
Surround Left
Surround
Left
Subwoofer
or Amplifier
Surround
Back Left
Center
– +
HKSUB 12
Receiver
Center
RL
Surround
Back Right
Front Right
Surround Right
Front
Right
Surround
Right
– + – +
Surround
Back Left
4 SPEAKER CONNECTION GUIDE
Surround
Back Right
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HKSUB12 harman/kardon
SPEAKER CONNECTION GUIDE
Analog Receiver/Processor –
Line-Level Connections
Use this installation method for
analog receivers or processors
that do not have
or bass-management programming,
and where the receiver/
equipped with an unfiltered subwoofer
output, or a volume-controlled preamp
(line-) level output:
Use the supplied RCA-type patch cord to
connect the
your receiver
right Line-Level Full-Range Input £ on
the HKSUB 12 subwoofer. Use both the left
and right inputs on the subwoofer if your
receiver or processor has both left and right
line-level outputs. (You will need to purchase
a second 15-foot interconnect cable.)
If your receiver is equipped with line-level outputs but does not have a separate subwoofer
output, use a Y-adapter (not supplied) to
bridge the receiver’s preamp output to the
main amp input for that channel, and connect
the long end of the adapter to the corresponding line-level input on the HKSUB 12.
IMPORTANT: Do not use the SUB Input
¢ on the subwoofer with analog receivers
or processors that have a full-range subwoofer output, such as models that have
Dolby Pro Logic* surround processing,
but not Dolby Digital processing. However,
if your analog receiver or processor has
a filtered subwoofer output, such as some
®
THX
-certified models, you may connect
it to the SUB Input ¢.
receiver’s
for more information.
Make sure that you have configured
your surround sound processor
for “Subwoofer On.”
digital processing
processor is
line-level subwoofer output on
or amplifier to either the left or
Consult your
or processor’s owner’s manual
When all connections have been made, plug
the AC Power Cord ¤ on the subwoofer
into an AC outlet.
Connect each speaker to the corresponding
speaker terminals on your receiver or amplifier.
Front
Left
– +
Front
Left
Surround
Left
Surround
Left
Surround
Back Left
Receiver or Amplifier
Surround
Back Left
– +
Center
– +
HKSUB 12
Subwoofer
Line-Level
Subwoofer
Out
Center
Surround
Back Right
Surround
Back Right
Front
Right
– +
L
R
Front
Right
Surround
Right
Surround
Right
– +
Page 8
Connection to Digital
Receiver/Processor
Use this installation method for
analog receivers or processors
that have Dolby Digital, DTS or
other digital surround decoders and
bass-management programming,
or analog receivers or
processors
that have a filtered subwoofer output:
Use the line-level input jack marked
SUB ¢ for the Low-Frequency Effects
channel. Connect this jack to the
subwoofer output or LFE output on your
receiver or amplifier. Connect each speaker
to the corresponding speaker terminals on
your receiver or amplifier.
Make sure you’ve configured your surround
sound processor for “Subwoofer On.”
When all connections have been made,
plug the
AC Power Cord ¤ on the
subwoofer into an AC outlet.
SPEAKER CONNECTION GUIDE
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HKSUB12 harman/kardon
Front
Left
– +
Surround
Left
– +
Front
Left
Surround
Left
Center
– +
HKSUB 12 Subwoofer
SUB
LINE
LEVEL
IN
SUB/LFE
Surround
Back Left
– + – +
Receiver
Amplifier
R
L
Out
Center
Surround
Back Right
or
Front
Right
– +
Front
Right
Surround
Right
Surround
Right
– +
– + – +
Surround
Back Left
Surround
Back Right
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CONFIGURING YOUR RECEIVER OR PROCESSOR
Configuring Your Receiver or
Processor
Modern surround sound receivers and
processors are sophisticated machines
that enable you to tailor the receiver’s
performance to match your loudspeakers
by programming the bass-management
function of the receiver. Bass management
ensures that the lowest and most powerful
frequency signals will be sent only to those
loudspeakers capable of reproducing them
without distortion. This is a simple matter of
selecting the correct speaker “size” on the
receiver to match the frequency range of
your speakers.
In the case of the HKSUB 12 subwoofer,
it is important to make sure that the
Subwoofer channel is enabled by setting it to
ON, SUB, LFE or L/R + LFE,
depending upon the capabilities of your
receiver. If you have full-range speakers for
your front left and right channels, you may
wish to configure your receiver to send only
the LFE signal to the HKSUB 12. For maximum bass performance, you may prefer to
send both the L/R and LFE low-frequency
signals to the HKSUB 12. Consult the
owner’s manual for your receiver or processor
for additional information.
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HKSUB12 harman/kardon
Page 10
MIN MAX
Subwoofer
Level
MIN MAX
Subwoofer
Level
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HKSUB12 harman/kardon
OPERATION
Power
Press the Master Power Switch ⁄
(marked Power) at the “•” (On) marking.
The HKSUB 12 subwoofer will automatically
turn on or go into Standby mode, depending
on whether or not a signal is being sent to it
by your receiver or surround processor, and
provided that the
Switch
in the
AUTO position.
Music-Sense On/Off
§ is moved to the left so that it is
When your receiver or amplifier is off, or is
not sending program material to the subwoofer, the subwoofer will be in Standby
mode and the
amp panel will turn red. When the sub
senses an audio signal,
turn on and the
LED Indicator ¶ on the
woofer
it will automatically
LED Indicator ¶ will turn
green. If the subwoofer does not sense a
signal after
approximately fifteen minutes,
it will automatically go into Standby mode.
When the
Music-Sense On/Off Switch §
is switched to the ON position, the subwoofer will remain on, whether or not program material is playing.
When you are away from home for
an extended period of time, switch the
Master Power Switch ⁄ to the OFF
position to prevent accidental activation of
the HKSUB 12.
Volume
Volume may be adjusted using the
Subwoofer Level Control ‚,as
shown. Turn the control knob clockwise
to increase the volume of the subwoofer,
and counterclockwise to decrease the
subwoofer’s volume.
The
Subwoofer Level Control ‚ adjusts
the volume of the subwoofer relative to the
rest of the system. Proper level adjustment
depends on several variables such as room
size, subwoofer placement, type of main
speakers and listener position. Adjust the
subwoofer level so that the volume of the
bass information is pleasing to you.
Additional Bass Adjustments
In addition to the volume adjustments
described above, the HKSUB 12 subwoofer
includes a
ª,a Filter Switch • and a Phase
Switch
bass response to suit your listening environment or taste.
The
determines the highest frequency at which
the subwoofer reproduces sounds when the
Speaker-Level Inputs ¡ or Line-Level
Full-Range Inputs
the owner’s manual for your main speakers
to determine the lowest frequency they are
capable of reproducing, and set this control
slightly above that frequency. For example, if
the specified frequency response for your
main speakers is 80Hz – 20kHz, then set
the
slightly to the left of the 100Hz marking
on the HKSUB 12’s amplifier panel.
The
no effect when the
or when the
Switch
The
• limits the frequencies of the audio signal
inputted to the subwoofer to the low
Crossover Frequency Control
∞ that can be used to adjust the
Crossover Frequency Control ª
£ are used. Consult
Crossover Frequency Control ª
Crossover Frequency Control ª has
SUB Input ¢ is in use,
High-Cut (Low-Pass) Filter
• is in the OFF position.
High-Cut (Low-Pass) Filter Switch
frequencies that the subwoofer reproduces
best. This allows the subwoofer to perform
more efficiently and with superior bass
reproduction, minimizing distortion that might
occur if the subwoofer attempted to reproduce higher frequencies. This switch should
be left in the
ON position, except:
1. When the SUB Input ¢ is being used,
in which case it has no effect, or
2. When the
Speaker-Level Inputs ¡ or
the Line-Level Full-Range Inputs £ are
being used with a crossover or filter aboard
the receiver or processor.
In these two circumstances, place the switch
in the
OFF position.
If your receiver or processor allows you to
select the crossover frequency for the main
speakers, choose the setting just above the
lowest frequency the main speakers are
capable of reproducing. This will send the
low-frequency portion of the signal to your
HKSUB 12, which is best able to reproduce
these frequencies with greatest efficiency
and minimal distortion. In this case, you may
use the
SUB Input ¢ connection, or if
that is not compatible with your receiver or
processor, place the
High-Cut (Low-Pass)
Filter Switch • in the OFF position in
order to avoid filtering the signal twice, which
may lead to signal loss and distortion.
In most situations, the
Phase Switch ∞
should be left in the NORMAL position.
If you suspect that the subwoofer is playing
out of phase with the other speakers, which
would tend to diminish bass response, try
placing this switch in the
REVERSE
position. There is no harm in experimenting,
and you may return the switch to the
NORMAL position at any time.
If you rearrange your room and reposition
the speakers, it would be a good idea to
check whether they are in phase by
flipping this switch.
Page 11
TROUBLESHOOTING
SYMPTOM SOLUTION
If you used the • Check that receiver/amplifier is on and a source is playing.
Speaker-Level Inputs ¡ • Check that the HKSUB 12 is plugged into an active electrical outlet and is switched on using the Master
and there is no sound Power Switch ⁄.
from any of the speakers: • Check all wires and connections between receiver/amplifier and speakers. Make sure all wires are connected.
Make sure none of the speaker wires are frayed, cut, punctured or touching other wires or terminals,
which may cause a short.
• Review proper operation of your receiver/amplifier.
If there is low (or no) • Make sure that all speakers have been correctly connected in phase, with the (+) terminal on the speaker
bass output: connected to the (+) terminal on the receiver/amplifier, and the (–) terminal on the speaker to the (–) terminal
on the receiver/amplifier.
• Check that the HKSUB 12 is plugged into an active electrical outlet and is switched on using the
Master
Power Switch ⁄.
• Slowly turn the Subwoofer Level Control ‚ clockwise until you begin to hear the desired amount of bass.
• If you are using either the Line-Level Full-Range Inputs £ or the Line-Level Subwoofer (SUB)
Input ¢, make sure you have properly configured your receiver or processor to enable its subwoofer output.
• If you are using the Line-Level Full-Range Inputs £,try adjusting the crossover setting using the
Crossover Frequency Control ª.
• If you are using either the Speaker-Level Inputs ¡ or the Line-Level Full-Range Inputs £
with a full-range output from your receiver or processor, switch the High-Cut (Low-Pass) Filter Switch •
to the ON position.
• Switch the Phase Switch ∞ from the NORMAL to the REVERSE position, or vice versa.
• Review proper operation of your receiver or processor and amplifier.
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HKSUB12 harman/kardon
Page 12
HKSUB 12 MECHANICAL PARTS LIST
11
Part Number Descript ion Qty
1 sz5999 logo 1
2 x1205000 Grille 1
3 338-RUB- 00123 Grille cups 6
4 352-FM05034D482 Foot/Front Baffle Scr ews 4
5 XC125009 Front baffle 1
6 30PF14FM-DW04
7 352-CM04020D202 W oofer Screws 8
8 WI5334-1 rubber feet 4
9 WI5321-B plastic feet 4
10 Not for Sale Cabinet w/ port tube 1
11 Not for Sale Amplifier 1
12 352-AM0402D210 Amplifier screws 10
W oofer w/ gasket
DCR = 3.3 ohms 1
HKSUB12 harman/kardon
12
11
10
5
4
1) Remove the grille.
3
2) Extract (6) rubber grille retainers; this can be accomplished by carefully pulling them out of the cavities with long-nosed pliers or
similar tool.
3) Remove the (6) Phillips screws that are now exposed.
4) Remove the front baffle.
5) Remove the (8) screws that secure the woofer (the screws may have a small adhesive pad atop each screw – they will have to be
moved or removed); remove the woofer and unplug the wires from the terminals.
6) To service the amplifier, remove the (10) Phillips screws at the rear of the enclosure, and pull the amplifier out of the back.
6
TO SERVICE THE HKSUB 12 SUBWOOFER
8
9
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HKSUB12 harman/kardon
HKSUB12 AMPLIFIER EXPLODED VIEW
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HKSUB12 harman/kardon
HKSUB 12 BLOCK DIAGRAM
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HKSUB12 harman/kardon
Test Set Up and Procedure
Equipment needed:
• Function/signal generator/sweep generator
• Integrated Amplifier
• Multimeter
• Speaker cables
Initial Control Settings:
• Power Switch OFF; Filter OFF
• Crossover Frequency 150Hz (Full CW)
• Level MIN (Full CCW)
• Phase, Standby switches do not matter
General Unit Function (UUT = Unit Under Test)
1) From the signal generator, connect one line level (RCA) cable to the Subwoofer Line Level Input jacks L/R
on the UUT. Use a Y-cable from a mono source if necessary to connect to both inputs. Do not connect to
the single, purple SUB input.
2) Turn on generator; adjust to 90mV, 50 Hz.
3) Plug in UUT; turn the power switch ON. LED should switch from Red to Green. Turn LEVEL control full
clockwise (MAX)
4) LED should Green; immediate and vigorous bass response should be heard and felt from port tube
opening.
5) Turn off generator, turn LEVEL control full counterclockwise (MIN), and disconnect RCA cable.
6) Connect one pair
of speaker cables to Speaker Level input terminal (IN) on UUT. Cables should be
connected to an integrated amplifier fed by the signal generator.
7) Turn on generator and adjust so that speaker level input at the amplifier is 1.5V, 50 Hz. Turn LEVEL control
full clockwise.
8) Green LED should light; immediate and vigorous bass response should be heard and felt from the port
tube opening.
Sweep Function
1) Follow steps 6-8 above, using a sweep generator as a signal source.
2) Sweep generator from 20Hz to 300Hz. Listen to the cabinet and drivers for any rattles, clicks, buzzes or
any other noises. If any unusual noises are heard, remove woofers and test.
Driver Function
1) Remove woofer from cabinet (instructions on exploded view drawing); detach + and - wire clips.
2) Check DC resistance of woofer; it should be 3.3 ohms ±10%
3) Connect a pair of speaker cables to driver terminals. Cables should be connected to an integrated amplifier
fed by a signal generator. Turn on generator and adjust so that speaker level output is 5.0V.
4) Sweep generator from 20Hz to 1kHz. Listen to driver for any rubbing, buzzing, or other unusual noises.
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HKSUB12 harman/kardon
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HKSUB12 harman/kardon
HKSUB 12 Electrical Parts List
PART NO. DESCRIPTION REFERENCE DESIGNATOR QTY
Resistors
110-12472j52 Resistor4.7K 1/2W ±5% CF R201,202 2
110-14103j26 Resistor 10K 1/4W ±5% CF R503,504,510 3
110-14222j26 Resistor 2.2K 1/4W ±5% CF R511 1
110-14432j26 Resistor 4.3K 1/4W ±5% CF R506 1
110-14472j26 Resistor 4.7K 1/4W ±5% CF R505 1
110-16102j26 Resistor 1K 1/6W ±5% CF R153,213,214,215,254 5
R128,130,149,150,209,212,216,217,218,220,221,222,
110-16103j26 Resistor 10K 1/6W ±5% CF
110-16104j26 Resistor 100K 1/6W ±5% CF R122,126,231,263,266,307 6
110-16105j26 Resistor 1M 1/6W ±5% CF R259 1
110-16122j26 Resistor 1.2K 1/6W ±5% CF R265 1
110-16124j26 Resistor 120K 1/6W ±5% CF R233 1
110-16151j26 Resistor 150Ω 1/6W ±5% CF R253 1
110-16153j26 Resistor 15K 1/6W ±5% CF R107 1
110-16154j26 Resistor 150K 1/6W ±5% CF R252 1
110-16182j26 Resistor 1.8K 1/6W ±5% CF R145 1
110-16183j26 Resistor 18K 1/6W ±5% CF R262 1
110-16203j26 Resistor 20K 1/6W ±5% CF R237,238,309 3
110-16205j26 Resistor 2M 1/6W ± CF R257 3
110-16221j26 Resistor 220Ω 1/6W ±5% CF R144 1
110-16222j26 Resistor 2.2K 1/6W ±5% CF R102 1
110-16223j26 Resistor 22K 1/6W ±5% CF R247,255,256,316 4
110-16303j26 Resistor 30K 1/6W ±5% CF R223,224 2
110-16333j26 Resistor 33K 1/6W ±5% CF R310 1
110-16393j26 Resistor 39K 1/6W ±5% CF R151 1
110-16472j26 Resistor 4.7K 1/6W ±5% CF R200,207,258 3
110-16473j26 Resistor 47K 1/6W ±5% CF R106,129,219,249,250,251,264 7
110-16474j26 Resistor 470K 1/6W ±5% CF R127,312 2
110-16512j26 Resistor 5.1K 1/6W ±5% CF R210,211 2
110-16562j26 Resistor 5.6K 1/6W ±5% CF R152 1
110-16621j26 Resistor 620Ω 1/6W ±5% CF R160 1
110-16682j26 Resistor 6.8K 1/6W ±5% CF R226,227 2
110-16751j26 Resistor 750Ω 1/6W ±5% CF R315 1
110-16755j26 Resistor 7.5M 1/6W ±5% CF R313 1
110-16913j26 Resistor 91K 1/6W ±5% CF R203,204,205,206 4
116-161002f26 P.T.C. 10K 1/6W ±1% MF R301,303 2
116-161102f26 P.T.C. 11.0K 1/6W ±1% MF R302 1
116-162200f26 P.T.C. 220Ω 1/6W ±1% MF R317 1
116-162202f26 P.T.C. 22.0K 1/6W ±1% MF R318 1
110-20332jk3 Resistor 3.3K 2W ±5% R134 1
113-50s68j00 Cement Res. 0.068Ω 5W ±5% R147 1
115h203b201 Variable Res. 20KB/2 VR202 1
115h503a102 Variable Res. 50KA VR201 1
116-201001jk3x Metal Res. 1.00K 2W ±5% R148 1
116-304700jk2x Metal Res. 470Ω 3W ±5% R501,502 2
1091ttc802j0 Resistor TTC-802(JS) NTC TH1 1
225,228,229,230,232,234,235,240,248,260,270,305,
306,308,311,314,319
29
Capacitors
129-a154j633 Metallze Cap. 0.15U 63V ±5% MSC C221,222 2
129-a224j633 Metallze Cap. 0.22uF 63V ±5% MSC C218 1
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HKSUB12 harman/kardon
PART NO. DESCRIPTION REFERENCE DESIGNATOR QTY
1302b101k503 Disc Cap. 100P 50V ±10% C302,303,306 3
130-2b221k503 Disc Cap. 220P 50V ±10% C200,204,205,207,208,210,211,212,214,220,230,237 12
130-2b470k503 Disc Cap. 47P 50V ±10% C229 1
130-2f104z503 Disc Cap. 0.1U 50V +80/-20%
132-103j503 Mylar Cap. 0.01U 50V ±5% C305,317 2
132-103ja03 Mylar Cap. 0.01uf 100V ±5% C103,104 2
132-104ja03 Mylar Cap. 0.1UF 100V ±5% C123,503,504 3
132-183j503 Mylar Cap. 0.018uF 50V ±5% C223 1
132-223ja03 Mylar Cap. 0.022uF 100V ±5% C215 1
132-273ja03 Mylar Cap. 0.027UF 100V ±5% C143 1
132-473j503 Mylar Cap. 0.047U 50V ±5% C224 1
132-563j503 Mylar Cap. 0.056U 50V ±5% C216 1
132-823j503 Mylar Cap. 0.082U 50V ±5% C217 1
135-3105m50 Electrolytic Cap. 1U 50V ±20% C228 1
135-3106m50 Electrolytic Cap. 10uF 50V ±20% C201,202,206,213,219,231,241,243,251,253,319,321 12
135-3107m10 Electrolytic Cap. 100U 10V ±20% C114,115 2
135-3107m16 Electrolytic Cap. 100uF 16V ±20% C234 1
135-3107m35 Electrolytic Cap. 100U 35V ±20% C507,508 2
135-3225m50 Electrolytic Cap. 2.2U 50V ±20% C509 1
135-3226m16 Electrolytic Cap. 22U 16V ±20% C304 1
135-3226m50 Electrolytic Cap. 22U 50V ±20% C225,505,506 3
135-3227m16 Electrolytic Cap. 220U 16V ±20% C118,233 2
135-3476m16 Electrolytic Cap. 47U 16V ±20% C318 1
132-103kb00 Mylar Cap. 0.01uF 200V ±10% C500 1
1385478m63 Electrolytic Cap.4700u 63v 20% C501,502 2
C107,117,122,144,232,242,245,246,252,254,256,320,
322
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Semiconductors
192027c1815gr Transistor 2SC1815GR Q108,109,113,201,206,207,208,301,302 9
192027c2235y Transistor 2SC2235Y Q111 1
192028a1015gr Transistor 2SA1015GR Q101,107,112 3
1921672n5551 Transistor 2N5551 Q114,115 2
1921682n5401 Transistor 2N5401 AI-PNP 350V Q503 1
197131n4148 Diode 1N4148 D102-105,143,201-208,214,215,216,301,302 18
199-15000335 Zener Diode 3.3V 1/2W D213 1
199-15000625 Zener Diode 6.2V 1/2W D101 1
199-15001605 Zener Diode 16V 1/2W D502 1
19006m4558d I.C. OPA 4558D U203 1
19016tl074cn I.C TL074CN ST U201,202,301 3
192161tip31c Transistor TIP31C SGS Q501 1
192162tip32c Transistor TIP32C SGS Q502 1
19510204hgw LED 204HGW 3 D209 1
19700kbu606g Diode 6A 800V KBU606G D501 1
197101n4004 Diode 1n4004 D110,504 2
Miscellaneous
1201000003 Inductor 10W AI YT-C3104-005 FB1,2 2
171urwh124d Relay RWH-SH-124D (1600 ohm) RL1 1
1740rca326p JACK RCA-326 JK201 1
17420810360g SPK JK BP 8PIN JK202 1
180tms7210v SWITCH SLIDE 6PIN MS7210V SW201,202,203 3
150r4055900a TRANSFER POWER 120V/60Hz T501 1
152u602015 AC Line Cord SVT FT-2 1
154k31505t0 Fuse 3.15A 250V 30mm UL/CSA F501 1
15563032i Fuse Holder HTB-32I 30mm UL/CSA for F501 1
180pbr12c11s PUSH SW BR12C11S SW501 1
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PART NO. DESCRIPTION REFERENCE DESIGNATOR QTY
16250129001 CABLE ASS'Y 120mm AWG28 WHT
1751b08v01 8 PIN PITCH=2.0mm
1751d02v01 2PIN PITCH=3.96mm
1751d03v01 3PIN PITCH=3.96mm IST-VH
16210082007
176wjce1
193201815t2
600b8401200
602p4300800
602p8300800
603r8807000
606p8301000
607c8301208
607p4300800
607p8300800
650sub240
653hsqlc1004
700kb800
700rc800a
707ac800
723a125
723a125-1
723b125
723b125-1
723d125
723i125
723j125
860a125
SW TO FUSE HOLDER WIRE RED AWG18 80mm#1015 8mm
CLOSE END TERMINAL CE-1
CERAMIC ISOLATOR FOR Q10,1
SCREW TO R/C ψ4*12
SCREW PCB TO BRKT-4 M3*8
SCREW R/P TO BRKT-2,TO 650pf8-bk- 2 M3*8
SCREW TO XFORMER M8*70
SCREW SPK-2,RCA-1 ψ3*10
SCREW H/S TO ID150-1 ψ3*12
SCREW PCB TO H/S-2 ψ3*8
SCREW R/P TO H/S-2 ψ3*8
PCB STAND L TYPE t=1.6mm S.P.C.C
HEAT SINK
KNOB 46077-W P.V.C.
REAR CABINET 268*213*102 A.B.S UL
BUSHING 4K-4 NO-BB
GASKET 213*15*2.0mm
GASKET213*15*1.0t
GASKET 238*15*2.0mm
GASKET238*15*1.0t
TO PRE PCB-1 GASKET 170*5*1t
TO LINK WIRE-1 GASKET150*15*1t UL
TO SPK WIRE GASKET 225*15*1t UL
TO SPEAKER
W201
W202
M100
M500
1
1
1
1
2
4
4
4
3
2
2
2
2
2
2
2
2
2
Power Amp Module PW150D (1010DS150-1)
Resistors
118-12061001j R2,11,29,30 RES, 1.00K 1206 5% 4
118-12061002j R7,9,25 RES, 10.0K 1206 5% 3
118-120610r0j R22,23 RES, 10.0 ohms 1206 5% 2
118-12061201j R31-46 RES, 1.20K 1206 5% 16
118-12062002j R26 RES, 20.0K 1206 5% 1
118-12062201j R6,13,16 RES, 2.20K 1206 5% 3
118-12062701j R10 RES, 2.70K 1206 5% 1
118-12063000j R24 RES, 300.0 ohms 1206 5% 1
118-12063301j R14,15,27,28 RES, 3.30K 1206 5% 4
118-12063902j R3 RES, 39.0K 1206 5% 1
118-12064700j R8 RES, 470 ohms 1206 5% 1
118-12064701j R1,5,12 RES, 4.70K 1206 5% 3
118-12064702j R17 RES, 47.0K 1206 5% 1
118-12064704j R4 RES, 4.70M 1206 5% 1
118-120647r0j R20,21 RES, 47.0 ohms 1206 5% 2
Capacitors
141-c0101k50 C4 CAP,CA 100pF 50V 10% 1206 NP0 1
141-c0220k50 C5 CAP,CA 22pF 50V 10% 1206 SMT NPO 1
141-c0561k50 C6 CAP,CA 560pF 50V 10% 1206 NPO 1
141-c6104m50 C2,3,7,8,9,10,11,15 CAP,CA 0.1uF 50V 20% 1206 Z5U 8
141-c7223k50 C13 CAP,CA 0.022uF 50V 10% 1206 X7R 1
141-d7104ka0 C1 CAP,NP 0.1uF 100V 10% 1210 X7 1
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PART NO. DESCRIPTION REFERENCE DESIGNATOR QTY
128e106ma01 C16,17 CAP,E NP 10uF 100V 20% 2
141-d7104kb0 CAP,NP 0.1uF 200V 10% 1210 X7 1
Semiconductors
19016tl072dts IC1 SMD I.C. TL072CDT SGS Dual Op-Amp 1
19209124126qs Q1,4,5 TRANS, NPN 50V 0.15A 2SC2412K 3
19209139066rs Q2,8 TRANS, NPN 120V 0.05A 2SC3906K 2
19209210376qs Q7,9 TRANS, PNP 50V 0.15A 2SA1037K 2
19209215146rs Q3,6 TRANS, PNP 120V 0.05A 2SA1514K 2
19703rls4148s D1,2,3,4,5,6 Diode RLS4148 6
199-15000563s Z1,2 ZENER 5.6V 5% PHILIPS BZX84-C5 V6 2
199-15001203s Z5,6 ZENER 12V 5% PHILIPS BZX84-C12 2
199-15001503s Z3,4 ZENER 15V 5% PHILIPS BZX84-C15 2
192232irf9640 Q10 FET IRF9640 IR P-CH TO220 1
192233irf640 Q11 FET IRF640 IR N-CH TO-220 1
Miscellaneous
1759f40hr2 Wafer 40PIN PITCH=2.54mm HR2*40
12214121m4191 L1 Ferrite core LS-A6206-ST EFD-30 1
12214350j4180 L2 Inductor 35uH 1
06-t3085020 PCB TO H/S-2,PCB TO PCB/H-4 SCREW 3*8 6
06-t31207 TO HSQLC1004/ID150-1 SCREW M3*12 1
HKSUB 12 Mechanical/Packing Parts List
Part Number Description Qty
Not for Sale Amplifier 1
30PF14FM-DW04 Woofer w/gasket DCR = 3.3 ohms 1
sz5999 logo 1
x1205000 Grille 1
338-RUB-00123 Grille cups 6
XC125009 Front baffle 1
352-CM04020D202 Woofer Screws 8
352-FM05034D482 Foot/Front Baffle Screws 4
352-AM0402D210 Amplifier screws 10
WI5321-B plastic feet 4
WI5334-1 rubber feet 4
wb6390 Outer carton 1
ai5271 Owner's manual 1
405-000-00227
wp5375 Packing foam 2
sal5044 cable 1
warranty car
1
Page 22
Integrated Circuit Diagrams
C
B
E
TIP31C NPN,
TIP32C PNP,
Q501,502
4558 / TLO72 DUAL OP AMP,
U203, IC1
OPAMP, QUAD 14P DIL TL074
U201, 202, 301
TRANS, PNP, 2N5401
TO-92,
Q503
TRANS, PNP,
2SA1015GR
Q101,107,112
TRANS, NPN, 2N5551
Q114,115
TRANS, NPN, 2SC1815GR
2SC2235,
Q108,109,111,113,201,206-208,301,302
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HKSUB12 harman/kardon
MOSFET, TO220
IRF640, 9640
Q11, 10
1. G
2. D
3. S
3
12
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HKSUB12 harman/kardon
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Page 26
HKSUB 12
25
®
Packaging
WARRANTY
CARD
405-000-00227
OWNER'S
MANUAL
ai5271
PACKING
FOAM
wp5375
PACKING
FOAM
wp5375
OUTER
CARTON
wb6390
CABLE
sal5044
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